Container rim with rounded corners



FIG. 1 is a perspective view of a container rim with rounded corners showing our new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a side elevation view thereof.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a container rim with rounded corners, as shown and described. 